I support this as another owner who has installed 4.88’sSo, the debate, at least for me, is settled
I watched all the videos. Scrubbed all the forums. Checked all the pricing too.
Like a lot of us, My JTR rides on 37 mud terrains on a mopar lift. For everyone who says the 4.10s are fine with this kind of set up, you are right. You can get down the road just fine, no surging, reasonable power. Its also true that doing so comes with a lot of gear hunting on the highway. But its seriously not an issue, you’ll just spDend a lot of time in 6th going down the road.
But, as decent as the 4.10s are with allowing you to get down the road, the 4.88’s are a game changer, and its not even close.
Elite Offroad here in Birmingham did a great job dropping in some Dana Spicer 4.88 gears and master install kit on my JTR this week. We used a Superchips Flashcal to dial it in. This thing will never be a hellcat in terms of pep but it moved itself with way more ease with the new rings. Very peppy, and more importantly, super smooth at part throttle. The jeep also uses all its gears and settles in to 8th without bogging. It shows off the strengths of this 8 speed well, up hill downshifts arehandled crisply and the engine never lags or bogs.
All of us have different driving styles. But for me, on the highway running 70 on flat ground i could achieve 20mpg running 2100 rpms. Pic below confirms what I saw.
We’ll put it on a trail after the break in period but I am expecting greater control off road and also less need for 4 lo on average trails here in the southeast. Hope these notes help any who are trying to make a decision. Zero regrets here, its really a no brainer and highly recommend.